Cachexia is a loss of weight, muscle atrophy, extreme fatigue and loss of appetite in people that are not trying to loss weight. Is seen in people with end-stage cancer, advanced stages of chronic kidney disease, cystic fibrosis, multiple sclerosis, parkinson's disease and AIDS.
Dark energy is an unexplained force that is causing _____.
Answer:
The given blank can be filled with expansion of the universe to accelerate.
Explanation:
Dark energy is the term given to the force, which is considered to be the reason behind the expansion of the universe. It is a theoretical form of energy, which is believed to function against the gravity and covers the whole of the universe, and is responsible for the majority of the energy present in it and is making its expansion to accelerate.
Dark energy was discovered by the astronomers in the 1990s and is the reason behind the expansion of the universe as it ages. It is found that this energy comprises approximately 70% of all the energy and matter in the universe.
Fill in the blanks. A food ____ is a diagram of the energy transfer among organisms in an ecosystem. A food ______ is an illustration of how the chains are interconnected.
first answer is chain
second answer is web
The first blank can be filled with chain and the second blank can be filled with web.
The food chain shows the link between the organism, what they eat and are eaten by whom. It is a diagram, which shows the flow of the energy from one organism to another by consumption of the organism. There are many organism, which can eat variety of food and can be eaten by many organism, together they form inter connected food chains, which is known as food web. In other words, food web is interconnected food chains.
Skeletal muscle fibers with the greatest endurance rely on ________ for energy.
To analyze the long bones, the femur and the humerus, you looked at bone markings such as condyles, tuberosities and trochanters. look back at the photographs and at the bone markings on your maniken®. how would you describe these markings in your own words? which features do you think separate each class of markings from the others?
Bone markings like condyles, tuberosities, and trochanters on long bones such as the femur and humerus serve as key features for joints, muscle attachments and passageways for nerves and blood vessels, making them essential for skeletal analysis.
When analyzing the long bones, such as the femur and the humerus, it's important to examine the bone markings, which include condyles, tuberosities, and trochanters. These markings are unique to each bone and provide insight into their functions.
Condyles are round protrusions at the end of bones that form joints. They articulate with other bones to allow movement. Tuberosities are large, rough projections where muscles and ligaments attach, indicating points of muscle attachment and stress. Lastly, trochanters are specific to the femur; these are large projections that provide additional surfaces for muscle attachment.
Each class of markings differs from the others based on their function and appearance. Articulations like condyles are involved in joints, projections such as tuberosities and trochanters relate to muscle attachments, and holes are passageways for nerves and blood vessels.
Understanding these markings and their functions is fundamental to skeletal analysis and helps in identifying human bones, as well as discerning differences in morphology that may indicate nonhuman origins.
Consider the adaptation to alcohol experiments presented in the text. in a high alcohol environment, what changes occurred in the fruit fly allele that produced the fast alcohol-metabolizing enzyme?
In a high alcohol environment, the variations that may occur in the fruit fly allele that may yield the fast alcohol metabolizing enzyme may affect the population of the allele. It only shows that the allele became more common in the population over time.
Lionfish have become an invasive species since their introduction into the Atlantic Ocean, where they have few natural predators due to their venomous spines and quick reproduction. They feed voraciously on native reef fish and mollusks, negatively impacting coral reef biodiversity. How can scientists further investigate the spread and impact of lionfish in order to develop potential solutions to this issue?
Encourage divers to report sightings of lionfish to update current maps
Introduce more fish and mollusks for the lionfish to feed on
Study maps of lionfish sightings prior to 1995
Use a remotely operated underwater vehicle (ROV) to capture lionfish
Answer:
Option D, Use a remotely operated underwater vehicle (ROV) to capture lionfish
Explanation:
ROV stands for remotely operated vehicle where a person sits at the surface of sea or ocean and operates this device. ROV is basically a maneuverable underwater robot that is used for collecting various types of data under the water.
In order to observe the Lionfish, it would be essential to use ROV because only then exact movement and number of this species could be traced accurately. Instance sights traced by divers will not help in any way. Since it is an invasive species, it would be better to keep a strict check on it and find solution for its eradication.
Hence, option D is correct
Scientists can trace the spread and impact of lionfish by encouraging divers to report sightings and using ROVs to capture them. They can use this data to find solutions to the lionfish issue.
Explanation:Scientists can further investigate the spread and impact of lionfish in several ways. Firstly, they can encourage divers to report sightings of lionfish in order to update current maps. This would allow scientists to track the growth and spread of the lionfish population, highlighting areas where they are becoming a growing issue.
Another method would be to use modern technology, such as a remotely operated underwater vehicle (ROV). This could be used to capture lionfish for research purposes, or simply to obtain visual confirmation of their presence in certain areas. The data collected from these ROV operations could then be used to develop potential solutions for lionfish invasion.
The third option - to introduce more fish and mollusks for the lionfish to feed on - is not viable as it would merely encourage more rapid population growth.
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what are 5 organelles are found in ALL cell types?
Which structure is not part of the blood circulation through the kidney?
Starting in 1945, nets designed to catch the biggest salmon were used in the Pacific Northwest. As a result, the smaller salmon had an advantage and had a better chance of survival. The small salmon survived to pass on their genes to succeeding generations.
Which type of natural selection is at work here?
directional selection
disruptive selection
stabilizing selection
Directional selection increases the frequency of individuals expressing one of the extreme phenotypic traits in a population. Otion A). Directional selection is working here.
What is Directional Selection?
Directional selection is one of the different types of natural selection.
It increases in the proportion of individuals with an extreme phenotypic trait.
It causes a decrease in the number of individuals expressing intermediate phenotype, and the other extreme phenotype.
This selection presents more frequently in those cases in which interactions between living organisms and the environment modify in the same direction.
In the exposed example,
There was an original wide range of salmon sizes.
One extreme phenotype is the largest fishes, and the other extreme phenotype is the smaller fishes.
The largest phenotype was the one affected by the fishing pressure.
The smallest fishes survived.
The alleles coding for the small size phenotype increased the species' fitness, so natural selection favored this extreme phenotype.
Small-sized fishes were favored over medium and large-sized fishes.
Directional selection is working here.
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Multicellular organisms have five levels of organization ranging from simplest to most complex. The simplest level is the cellular level. This is an image of one type of cell found in your body: a cheek cell. You are the most complex level: you are an organism. List the five levels of organization, from simplest to most complex. Describe each level with one or two sentences. Give an example at each level.
Answer:
Answer:
Cells, Tissues, Organs, Organ Systems, Organism
Explanation:
Cells are the basic unit of structure and function for all living organisms. (somatic cells and gametes)
Tissues are groups of the same type of cells such as muscle tissue.
Organs are composed of multiple tissues that have specific functions such as the brain, stomach, heart, lungs, etc.
Organ Systems are groups of organs that work together to achieve a certain function (nervous system, circulatory system, digestive system)>
Organisms are living beings that are made up of cells, tissues, and organs. (humans, animals, fungi, etc.)
Final answer:
The five levels of organization in multicellular organisms are cellular, tissue, organ, organ system, and organism, ranging from simplest to most complex. These levels reflect the increasing complexity and coordination required for life processes, with examples including cheek cells, muscle tissue, the heart, the digestive system, and a human being.
Explanation:
The organization of the human organism can be described from the simplest to the most complex levels. Here's a breakdown of each:
Cellular Level: This is the basic unit of life, where all life processes occur. An example is a cheek cell.Tissue Level: Similar cells come together to form tissues, which perform specific functions. An example is muscle tissue, which helps in movement.Organ Level: Different tissues combine to form an organ. For instance, the heart is comprised of muscle tissue, nervous tissue, and more.Organ System Level: Organs work together in systems to carry out complex activities. The digestive system, for instance, includes the stomach, intestines, and other organs working in harmony to process food.Organism Level: The most complex level, it represents the sum of all systems working together to create an independent living being, such as a human being.Throughout these levels, from the cellular level to the organism level, the coordination and complexity increase, enabling organisms to carry out more specialized and intricate tasks, ensuring survival and proper function.
Fill in the blanks below to complete the hypothesis for this lab. It should answer the lab question, “What is the effect of molecule size on a molecule’s ability to diffuse across a semipermeable membrane?”
If molecules are small enough, then . . .because....
you have to create a Hypothesis
A semi-permeable membrane is a type of membrane, which selectively allows the movement of particles or ions via osmosis.
If the molecules are small enough, then they will diffuse across the membrane because the pores of the membrane are small, through which molecules can easily pass.
The semi-permeable membrane can be a biological, synthetic, or polymeric layer that allows the selective movement of molecules across the membrane through osmosis.
Some of the features of a semi-permeable membrane are:
It allows the movement of ions or small molecules across the cell. It acts as a barrier and filters out the other molecules. Large molecules such as glucose and water cannot pass through the semi-permeable membrane.The permeability of the membrane is highly dependent on the size of the molecules.
Therefore, it can be assumed that a semi-permeable membrane is unique and allows the movement of small molecules and ions across it via osmosis.
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Answer:
A semi-permeable membrane is a type of membrane, which selectively allows the movement of particles or ions via osmosis.
If the molecules are small enough, then they will diffuse across the membrane because the pores of the membrane are small, through which molecules can easily pass.
The semi-permeable membrane can be a biological, synthetic, or polymeric layer that allows the selective movement of molecules across the membrane through osmosis.
Some of the features of a semi-permeable membrane are:
It allows the movement of ions or small molecules across the cell.
It acts as a barrier and filters out the other molecules.
Large molecules such as glucose and water cannot pass through the semi-permeable membrane.
The permeability of the membrane is highly dependent on the size of the molecules.
Therefore, it can be assumed that a semi-permeable membrane is unique and allows the movement of small molecules and ions across it via osmosis.
Explanation:
Which of the food ingredient is important for brain development? glucose dha folic acid sucrose?
The nurse discusses the recommended weight gain during pregnancy with a newly pregnant client who is 5 ft 3 in (160 centimeters) tall and weighs 130 lb (57 kilograms). the nurse explains that with the recommended weight gain, at term the client should weigh how much?
Which organelle is the primary site of atp synthesis in eykaryotic cells?
What is taxonomy? who is credited for creating the classification system used by biologists today?
A unicellular organism adapted to living in salt water is placed in a freshwater tank. what is the likely outcome? water moves out of the cell until the organism can adapt. water and salt move in opposite directions until the organism can adapt. water moves into the cell, causing it to burst. water moves out of the cell, causing it to shrivel. water moves into the cell until the organism can adapt.
A neuron that has as its primary function the job of connecting other neurons is called a(n) ______
The neurons whose function is to connect other neurons is called an interneuron.
What is the primary function of an interneuron?Interneurons are found primarily in the central nervous system and they connect one neuron to another. The primary function of the interneurons is to receive and send signals to other neurons They help in the transmission of nerve impulses
Neurons are classified as sensory, motor, and interneurons. The interneurons receive signals from the sensory neurons, interpret the information from other neurons, and send impulses to the motor neurons.
When an electrical impulse is triggered from a neuron, there is a release of neurotransmitters in the synapse. These neurotransmitters cross the synapse and bind to the receptors which further process the message.
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The portion of the mass that changes from day to day, dependent upon the feast celebrated, is called:
The function of the heart is to move ____ blood from the venous system through the right heart into the _____ circulation and to move ____ blood from the pulmonary circulation through the left heart into the ____ circulation.
When a coelom is formed by introducing a gap surrounded by mesodermal cells at the base of the blastula, between the ectoderm and the endoderm, it is said to exhibit?
The pancreatic hormone that raises blood glucose concentration is ________
The body makes its own supply of this lipid, which has a ring structure and is part of every cell membrane.
If the statement is asking whether it is true or false, the answer is true. The body can make its own lipid because of the food that we eat and also because it is found in the body where it is located in the tissues and the cells. It does compose of ring structure as it has multiple rings which are considered essential and the lipids are considered to be a part of a cell membrane.
Cholesterol is the lipid made by the body that has a ring structure and is part of every cell membrane. It contributes to the rigidity and fluidity of the membrane and is found in various organisms.
Explanation:The body makes its own supply of a lipid called cholesterol, which has a ring structure and is an essential part of every cell membrane. Cholesterol is a type of steroid that contributes to the rigidity and fluidity of the membrane. It strengthens cell membranes in eukaryotes and bacteria without cell walls, and it is also found in fungi and some protozoa.
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evaluate the impact on living organisms if the sun began to produce less energy and then finally burned out
Which of the following devices or techniques might be used to identify the presence of human remains?
Cadaver dogs
Ground penetrating radar
Aerial photographs
All of the above may be used.
Answer: All of the above may be used.
Explanation:
Cadaver dogs: Cadaver dogs are the dogs which used to locate or detect the human remains from a region where they are expected to be found. This is due to the brilliant sensing ability of these dogs which helps the police department to find blood, placenta, partially degraded human remains buried in the soil.
Ground penetrating radar: The GPR system can be useful in detecting the buried remains inside the soil by using a radar system of landslide or avalanche victims.
Aerial photographs: The aerial photograph can be obtained from the entire suspected land any bones and entire skeleton can be identified or recovered by this approach.
On the basis of the above explanation all of the above may be used to identify the presence of human remains.
If a group of mantella frogs were transported to the ecosystem of the poison dart frogs what might happen to the two species' population
How do plant pigments and the absorption spectrum relate to photosynthesis?
Plant pigments, such as chlorophyll, absorb specific wavelengths of light for photosynthesis. The absorption spectrum shows which wavelengths of light are absorbed. This helps drive the process of photosynthesis.
Explanation:Plant pigments and the absorption spectrum are closely related to photosynthesis. Plant pigments, such as chlorophyll, absorb specific wavelengths of light, converting light energy into chemical energy. The absorption spectrum shows which wavelengths of light are absorbed by different pigments. This spectrum coincides with the action spectrum of photosynthesis, indicating that the absorbed light is used in the process of photosynthesis.
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Which compound was abundant in Precambrian Earth’s oceans, before complex life evolved on Earth?
dissolved oxygen
dissolved carbon dioxide
dissolved methane
dissolved ammonia
Answer:
dissolved carbon dioxide
Explanation:
Before complex life evolved on Earth, the Precambrian Earth’s oceans was abundant in dissolved carbon dioxide.
What was the Precambrain period?The Precambrain period is a period of time before the emergence of complex life.
During the Precambrain period, continents were formed and the atmosphere developed while early life evolved and flourished.
The composition of the Earth’s oceans was dissolved carbon dioxide.
Therefore, before complex life evolved on Earth, the Precambrian Earth’s oceans was abundant in dissolved carbon dioxide.
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a studnet drew the following model: volcano, cooling, crust, motion, plates,compression which landform should the student put next in the sequence?
A. Lava Flow
B. Rift Valley
C. Plain
D. Folded Mountain
D.) Folded Mountain
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What property of matter causes water vapor to condense
DUST and Clouds Dew These are the particles of water vapor gathered around dust in the air. When they gathered, they form droplets of liquid water. In the case of boiling water the steam particles collide with one and other and form droplets large enough to fall down or a decrease in atmospheric pressure and temperature is the reason why water to form on cooler surfaces.
What describes the cells of a wilted plant?